442212240 has 40 divisors (see below), whose sum is σ = 1370858688. Its totient is φ = 117923200.

The previous prime is 442212227. The next prime is 442212263. The reversal of 442212240 is 42212244.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 921036 + ... + 921515.

Almost surely, 2^442212240 is an apocalyptic number.

442212240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

442212240 is an abundant number, since it is smaller than the sum of its proper divisors (928646448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442212240 is a wasteful number, since it uses less digits than its factorization.

442212240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1842567 (or 1842561 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 21.

The square root of 442212240 is about 21028.8430494880. The cubic root of 442212240 is about 761.8630653421.

Adding to 442212240 its reverse (42212244), we get a palindrome (484424484).

The spelling of 442212240 in words is "four hundred forty-two million, two hundred twelve thousand, two hundred forty".